Bony fish: 2 myomeres per vertebral sentrum - can span 3 to 12 intervertrebral joints; Each myotome divided into 4 or more portions by myosepta Vertical septum = bilateral left and right halves Horizontal septum (2 layers tendons) divide into hypaxial and epaxial

Lecture 3 Ichthyology Chpt 3 Helfman et al. Skeleton, Skin and Scales

White vs Red Muscle

White = short duration/ quick fatigue; bursts of power (escape/capture prey); lack of myoglobin and little vascularization; little lipid, low mitochondrial, large diameter and have an anaerobic glycolysis system - trout use 50% stored glycogen in 15 seconds -glycogen to lactate - takes up to 18 hours for recovery

ventricle and conus arteriousus. Venous (unoxygenated) blood collects in sac-like sinous venosus from liver via hepatic sinuses and from other regions of body from common cardinal veins. Ducts of Cuvier laterally.